From a2894cfb3a6d60980ba85181e31ccc079807e92b Mon Sep 17 00:00:00 2001 From: Michal Ostrowski Date: Wed, 27 Dec 2006 22:14:43 -0600 Subject: [PATCH] [POWERPC] Do not write virq back to PCI config space - Drivers will not rely on the PCI config space value, as they've already been conditioned to rely on the irq field in "struct pci_dev". - The virq value may not be < 256 as it has been remapped. - The PCI config space should reflect the hardware configuration, which is not being changed. We are only creating a virtual irq mapping that exists in the kernel only. One would never expect the PCI hardware to generate the "virq" interrupt. Signed-off-by: Michal Ostrowski Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/pci_32.c | 1 - arch/powerpc/kernel/pci_64.c | 1 - 2 files changed, 2 deletions(-) diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c index c54f3639c5ad..d8ef2e100505 100644 --- a/arch/powerpc/kernel/pci_32.c +++ b/arch/powerpc/kernel/pci_32.c @@ -1450,7 +1450,6 @@ int pci_read_irq_line(struct pci_dev *pci_dev) return -1; } pci_dev->irq = virq; - pci_write_config_byte(pci_dev, PCI_INTERRUPT_LINE, virq); return 0; } diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 73c59ec49120..b6d08738180b 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -1325,7 +1325,6 @@ int pci_read_irq_line(struct pci_dev *pci_dev) DBG(" -> mapped to linux irq %d\n", virq); pci_dev->irq = virq; - pci_write_config_byte(pci_dev, PCI_INTERRUPT_LINE, virq); return 0; } -- 2.20.1